Menu

EWG's Tap Water Database

Donate

Dichloroacetic acid

Watertown City

Dichloroacetic acid, one of the group of five haloacetic acids regulated by federal standards, is formed when chlorine or other disinfectants are used to treat drinking water. Haloacetic acids and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

 

142

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201023.8 ppb16162.30 ppb - 48.0 ppb
201128.9 ppb1210ND - 60.0 ppb
201222.2 ppb16162.70 ppb - 50.0 ppb
201320.8 ppb16164.10 ppb - 30.0 ppb
201419.2 ppb34344.00 ppb - 32.0 ppb
201522.2 ppb48489.70 ppb - 49.0 ppb

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 0.7 ppb

The health guideline of 0.7 ppb for dichloroacetic acid was defined by the Environmental Protection Agency as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

ppb = parts per billion.

EPA Maximum Contaminant
Level Goal (MCLG)0 ppb

A non-enforceable federal health guideline. For cancer-causing chemicals, these health goals are typically set to zero.

ppb = parts per billion.

All test results

Date Lab ID Result
2010-02-111002459-0036.10 ppb
2010-02-111002459-0014.40 ppb
2010-02-111002459-00411.0 ppb
2010-02-111002459-00213.0 ppb
2010-05-131007613-0042.70 ppb
2010-05-131007613-00347.0 ppb
2010-05-131007613-00116.0 ppb
2010-05-131007613-00222.0 ppb
2010-08-131013847-00340.0 ppb
2010-08-131013847-0045.70 ppb
2010-08-131013847-00142.0 ppb
2010-08-131013847-00248.0 ppb
2010-11-09101957-00135.0 ppb
2010-11-091019574-00347.0 ppb
2010-11-091019574-00239.0 ppb
2010-11-091019574-0042.30 ppb
2011-05-111106553-00152.0 ppb
2011-05-111106553-00245.0 ppb
2011-05-111106553-00430.0 ppb
2011-05-111106553-00360.0 ppb
2011-08-031112110-00337.0 ppb
2011-08-031112110-004ND
2011-08-031112110-00244.0 ppb
2011-08-031112110-00137.0 ppb
2011-11-141118448-00116.0 ppb
2011-11-141118448-00314.0 ppb
2011-11-141118448-00212.0 ppb
2011-11-141118448-004ND
2012-02-221202714-00432.0 ppb
2012-02-221202714-00317.0 ppb
2012-02-221202714-00219.0 ppb
2012-02-221202714-00150.0 ppb
2012-05-021206534-00327.0 ppb
2012-05-021206534-00121.0 ppb
2012-05-021206534-00426.0 ppb
2012-05-021026534-00231.0 ppb
2012-08-011212371-00217.0 ppb
2012-08-011212371-00912.0 ppb
2012-08-011212371-0063.00 ppb
2012-08-011212371-01020.0 ppb
2012-11-071218302-0062.70 ppb
2012-11-071218302-00920.0 ppb
2012-11-071218302-01029.0 ppb
2012-11-071218302-00228.0 ppb
2013-02-061301770-00711.0 ppb
2013-02-061301770-00630.0 ppb
2013-02-061301770-00812.0 ppb
2013-02-061301770-00213.0 ppb
2013-05-08MRT0031 DBP 2QTR1330.0 ppb
2013-05-08DS00014 DBP 2QTR1325.0 ppb
2013-05-08DS00026 DBP 2QTR1323.0 ppb
2013-05-08DS00015 2QTR201324.0 ppb
2013-08-061313147-0044.10 ppb
2013-08-061313147-00326.0 ppb
2013-08-071313147-00226.0 ppb
2013-08-081313147-00119.0 ppb
2013-11-061318290-01222.0 ppb
2013-11-061318290-01120.0 ppb
2013-11-061318290-00723.0 ppb
2013-11-061318290-01024.0 ppb
2014-02-051401657-0128.70 ppb
2014-02-051401657-0118.50 ppb
2014-02-051401657-0107.70 ppb
2014-02-051401657-00717.0 ppb
2014-02-051401657-0134.00 ppb
2014-04-021404398-00913.0 ppb
2014-05-071406257-01122.0 ppb
2014-05-071406257-01227.0 ppb
2014-05-071406257-00126.0 ppb
2014-05-071406257-00421.0 ppb
2014-07-161410755-01125.0 ppb
2014-07-161410755-01225.0 ppb
2014-07-161410755-01025.0 ppb
2014-07-161410755-00715.0 ppb
2014-08-061412351-00721.0 ppb
2014-08-061412351-01229.0 ppb
2014-08-061412351-01119.0 ppb
2014-08-061412351-01031.0 ppb
2014-09-101414832-00915.0 ppb
2014-09-101414832-01113.0 ppb
2014-09-101414832-00814.0 ppb
2014-09-101414832-01213.0 ppb
2014-10-081416618-01217.0 ppb
2014-10-081416618-01026.0 ppb
2014-10-081416618-01124.0 ppb
2014-10-081416618-00718.0 ppb
2014-11-051418303-01032.0 ppb
2014-11-051418303-00731.0 ppb
2014-11-051418303-01123.0 ppb
2014-11-051418303-01226.0 ppb
2014-12-031419724-01213.0 ppb
2014-12-031419724-01112.0 ppb
2014-12-031419724-00813.0 ppb
2014-12-031419724-00919.0 ppb
2015-01-141500772-01012.0 ppb
2015-01-141500772-01211.0 ppb
2015-01-151500772-01111.0 ppb
2015-01-151500772-00721.0 ppb
2015-02-041501522-0119.70 ppb
2015-02-041501522-00815.0 ppb
2015-02-041501522-01212.0 ppb
2015-02-041501522-00916.0 ppb
2015-03-041502825-01018.0 ppb
2015-03-041502825-01114.0 ppb
2015-03-041502825-01214.0 ppb
2015-03-041502825-00723.0 ppb
2015-04-081504564-01212.0 ppb
2015-04-081504564-01016.0 ppb
2015-04-081504564-01113.0 ppb
2015-04-081504564-00717.0 ppb
2015-05-061506084-01234.0 ppb
2015-05-061506084-01039.0 ppb
2015-05-061506084-00739.0 ppb
2015-05-061506084-01140.0 ppb
2015-06-031507791-01222.0 ppb
2015-06-031507791-01020.0 ppb
2015-06-031507791-01120.0 ppb
2015-06-031507791-00731.0 ppb
2015-07-081510103-01131.0 ppb
2015-07-081510103-01232.0 ppb
2015-07-081510103-01036.0 ppb
2015-07-081510103-00749.0 ppb
2015-08-051511980-01226.0 ppb
2015-08-051511980-01125.0 ppb
2015-08-051511980-00723.0 ppb
2015-08-051511980-01035.0 ppb
2015-09-091514301-01025.0 ppb
2015-09-091514301-01235.0 ppb
2015-09-091514301-01132.0 ppb
2015-09-091514301-00732.0 ppb
2015-10-071516030-01217.0 ppb
2015-10-071516030-01115.0 ppb
2015-10-071516030-00619.0 ppb
2015-10-071516030-00920.0 ppb
2015-11-041517576-01018.0 ppb
2015-11-041517576-01113.0 ppb
2015-11-041517576-00716.0 ppb
2015-11-041517576-01215.0 ppb
2015-12-021519086-01116.0 ppb
2015-12-021519086-01217.0 ppb
2015-12-021519086-00720.0 ppb
2015-12-021519086-01021.0 ppb